Finally apply the patch sent by <Someone> in 11/2003 for slashem-Bugs-799278,
updated to match the current code and handle additional cases. The fix
is brute force: always ensure nomovemsg is set when nomul is called with
a negative value. I also scanned the code for places manually setting
multi negative, they all set nomovemsg. It would be nice to have a function
that did the right thing, but there are several special cases and I was
not feeling creative.
e367964f90